A High Resolution Spectroscopic Investigation of Near-Turnoff Stars in M67

We describe a high-resolution spectroscopic survey of near-turnoff stars in the open cluster M67. Observations were conducted using the WIYN 3.5m telescope in conjunction with the HYDRA spectrograph at Kitt Peak National Observatory. We present preliminary results concerning two anomalous sub-groups of near-turnoff stars, blue stragglers and bright subgiants, which may lead to new insights into the evolution of such objects. Support for this was provided by NSF grant AST 09-08342.